Vertical internal-combustion engine



G. PIELSTICK VERTICAL INTERNAL GOIBUSTION ENGINE Filed April 11, 192s 4 2 Sheets-Shoot 1 Aug. 7, 1928. 1,679,491

Patented Aug. 7, 1928.

UNITED STATES PATENT OFFICE.

GUSTAV PIELSTICK, OF .AU'GSIBURG, GERMANY, ASSIGNOR TO THE FIRM MASCHINEN- FABBIK, AUQSBUBG-NUERNBERG, AKTIENGESELLSCHAFT, OF AUGSBURG, GER- MANY, A CORPORATION OF GERMANY.

VERTICAL INTERNAL-COMBUSTION ENGINE.

Application filed April 11, 1925, Serial No. 22,294, and in Germany May 15, 1924.

This invention relates to vertical internal combustion engines. Such engines are known in which the cylinder proper is contained within a box shaped supporting frame which is made in the form of a single casting secured to the bedplate by means of foundation bolts. This construction has however proved unsuitable for engines of large power such as single or double acting two-stroke engines, as it is difiicult to cast the supporting frame in one piece, its erecting offers difficulties, and in case of a faulty casting being produced there is a considerable loss.

According to this invention, the supporting frame is built up of upper and lower members which are connected together and to the frame standards and the bed plate, by means of stays and foundation bolts. In this manner there is provided for each cylinder a supporting frame which is built up of single parts and is open on all sides. Consequently the cylinder is easily accessible from the outside, and it becomes possible to arrange the starting and safety valves laterally with respect to the cylinder heads or covers. The latter therefore contain, in the case of two-stroke engines, only the fuel valves-and are free from any other built-in parts. As the upper frame member is detachable from the rest of the supporting frame, the removal of the piston is facili tated and considerable saving of head room for this urpose is effected. The cylinder liner is divided transversely at its middle to permit each part to expand freely towards the other. The outer water jacket is mounted on the lower flange of the liner with a packed joint between and is guided on the upper flangeof the liner by means of a stufling box. Owing to this construction the water jacket and the two halves of the cylinder liner can expand independently of each other and expansion stresses in the cylinder are thereby avoided.

In order that the said invention may be clearly understood and readily carried ,into effect, the same will now be described more fully with reference to the accompanying drawings, in which Figure 1 is a side elevation of a double- Figure 6 is a side elevation with parts broken away of a single-acting two-stroke engine constructed according to this invention.

In the construction shown by Figures 1 to 5, on the frame standards 1 is mounted the box shaped frame constituted by a lower girder or frame member 3 and an upper girder or frame member 4 which are connected together and to the standards 1 as well as to the bed plate 2by means of four stays 5 and foundation bolts or tie rods 6 ex tendingright through from the bottom of the bed plate to the top of the upper frame member 7, 7' are the upper and lower cylinder heads which rest against the girders or frame members 4 and 3 respectively so that the girders take the whole pressure during working. The cylinder heads can be therefore made relatively low and light. The cylinder liner is divided transversely so that each half can expand freely towards the other. The upper half is secured by bolts 10, to the upper girder 4, whilst the lower half rests on the lower cylinder head and is held in position by the lower flange of the water jacket 12 which is detachably connected to the lower girder 3 by means of bolts 11. The water jacket is free to expand upwards and is guided by' means of a stuffing box 13 on the flange of the upper half of the cylinder liner. Suitable packing is provided for all the joints between the liner parts and the cylinder heads to make the same gas-tight, and similarly packing is provided for all the joints between the liner parts and the cooling jacket to make the same liquid-tight. The starting valves 14 are arranged laterally with respect to the cylinder heads this'being rendered possible owingto the open construction of the box shaped frame. In this manner a considerable saving of head room is effected in comparison w th heretofore known double-acting engines in which the piston is removed in an upward direction, which is a very important consideration in view of the considerable height of large engines.

In the embodiment shown in Figure 6, the bottom girder 3 is replaced by simple supports or frame members 15 secured to the frame standards 1, the cylinder jacket resting on the said supports. In this case the cylinder liner is made in one piece, as the expansion in this construction can take place freely in the downward direction independently of the outer jacket, this being due to the elimination of the lower cylinder head. A tight piston joint is ensured by means of two glands 16 which are inserted in the cylinder jacket and contain packing rings. The stays 5 are placed directly on the frame standards and are connected to the latter by means of foundation bolts. In other respects this construction is similar to the construction illustrated in Fi res 1 to 5.

In the case of multi-cylinder engines, the supporting frames of the several cylinders can be connected together in the manner shown in Figure 1, for instance by flanges and bolts so as to produce a single supportin body for the whole of the cylinders.

What I claim is:

1. In a vertical internal combustion engine of the character described. the combination of a cylinder comprising a water jacket, a cylinder liner therein divided transversely into an upper part and a lower part, a cylinder head for each end of said cylinder, a supporting framework for said cylinder comprising a supporting member cooperating with each cylinder head, a bolt mounted in one of said supporting members and fastened to the adjacent end of the water jacket, the adjacent end of the water jacket and adjacent portion of the liner having cooperating engaging surfaces whereby the said adjacent end of the said water jacket and the portion of the cylinder liner therein and the cylinder head cooperating therewith are clamped to the frame mem- .ber and together, a bolt mounted in the other frame member and fastened to the adjacent part of the cylinder liner. whereby said part of the cylinder liner and the cylinder head coo erating therewith, are clamped to the other frame member and together, packing means between the free end of the water jacket and the cylinder liner, a bed plate, frame-carrying standards on said bed plate. and foundation bolts connecting the frame members, the frame-car rying standards, and the bed plate together to clamp the whole in assembled relation.

2. In a multi-cylinder vertical internal combustion engine of the character described, the combination of a plurality of cylinders, each cylinder having a cylinder head at each end, a supporting framework for each cylinder comprising an upper frame member cooperating with the upper cylinder head and a lower frame member cooperating with the lower cylinder head, a bed plate, frame-carrying standards on said bed plate, said supporting framework being carried by said frame-carrying standards, means clamping said frame members of each cylinder in assembled relation and means clamping the several supporting frameworks together to form an integral supporting body for all the cylinders.

3. In an internal combustion engine of the character described, the combination of a plurality of cylinders, a cylinder head for each cylinder, and a connected supporting framework for all said cylinders, comprising frame members overlying the respective cylinder heads to hold said heads in assembled position, said framework being adapted to take the pressure and strain exerted upon the heads during operation of theenglne.

4. In a double-acting internal combustion engine of the character described, a cylinder, a cylinder head for each end of the cylinder, a supporting framework for said cylinder'comprising a supporting member seating against each cylinder head, and stays for holding said supporting members in spaced relation, said cylinder comprising a cooling jacket, a cylinder liner therein divided transversely of said cylinder into two parts, means clamping one part of said liner to the adjacent-supporting member to hold said part of the liner in gas-tight relation against the adjacent cylinder head, means clamping the cooling jacket to the other supporting member, said cooling jacket and the other part of the liner having cooperating engaging surfaces whereby the other part of said liner is clamped in gastight relation against the other cylinder head, and tie means connecting the supporting members together ,to clamp the whole in assembled relation, where y each part of the liner is permitted to freely expand toward or contract away from the other part. 5. In a double-acting internal combustion engine of the character described, a cylinder, a cylinder head for each end of the cylinder, a supporting framework for said cylinder comprising a supporting member seating against each cylinder head, and stays for supporting said supporting members in spaced relation, said cylinder comprising a cooling jacket, a cylinder liner therein divided transversely of said cylinder into two parts, means clamping one part of said liner to the adjacent supporting member to hold said part of the liner in gas-tight relation against the adjacent cylinder head, means clamping the cooling jacket to the other supmember in space porting member, said cooling jacket and the other part of the liner having cooperatlng engaging surfaces whereby the other part of said liner is clamped in gas-tight relation against the other cylinder head, said parts being so constructed as to permit each part of the liner to freely expand toward or contract away from the other part, packing means between the free end of said cooling jacket and the cylinder liner to hold the cooling jacket in liquid-tight relation agalnst said liner and to permit free expansion or contraction of the cooling jacket independently of the liner, and tie means for fastening the supporting members together to clam the whole in assembled relation.

6. In a double acting vertical internal combustion engine of the character described, a cylinder, a cylinder head for each end of the cylinder, a supporting framework for said cylinder comprising a bed plate, frame carrying standards on said bed plate, a lower frame member carried bysaid frame carrying standards, an upper frame member, stays sup orting said upper frame relation to said lower frame member, said cylinder being operatively positioned between said upper and lower frame members with said frame mem: bers overlying and engaging the respective cylinder heads to hold said heads in 0 erative position upon the cylinder, an tie means for clamping said parts in operative assembled relation, said framework bein so constructed as to leave the exterior wall of said cylinder exposed to permit ready access thereto.

7. In an internal combustion engine of the character described, the combination of a cylinder, a separable cylinder head for engaging the cylinder structure to close the end of the bore of said cylinder, a supporting framework for said cylinder comprisin a frame member overlying and contacting with said cylinder head, and means for clamping said cylinder and frame member together to hold said cylinder head in operative 1position against the cylinder structure.

8. n a double-acting internal combustion engine of the character described, a cylinder comprising a transversely divided two-part liner, a separable cylinder head for each end of the cylinder, a supportingframework for said cylinder, comprising opposed frame members and means for supporting said .frame members in spaced relation with the cylinder therebetween, bolts for connecting one part of said liner to one of said frame members, means for clamping the other part of said liner to the other frame member, the construction being such that said frame members cooperate with said cylinder heads to hold said heads in assembled relation upon said cylinder, a supporting foundation for said cylinder and frame members, and tie means connecting said frame members together and to the foundation to form a unitary frame structure.

9. In a double-acting internal combustion engine of the character described, a cylinder, a cylinder head for each end of the cylinder, a supporting framework for said cylinder comprising opposed frame members acting respectively against the said cylinder heads, means for supporting said frame members in spaced relation, said cylinder comprising a cylinder liner divided transversely of said cylinder into two parts, means for connecting one part of said liner to one of said frame members to hold said part of the liner in gas-tight relation against the adjacent cylinder head, means for clam ing the other part of the liner to the other ame member to hold said. part of the liner in gas-tight relation against the other cylinder head, and

tie means for connecting said frame members together to clamp the whole in'assembled relation, the construction being such that each part of the liner is permitted free expansion during operation.

10. In a double-acting internal combustion engine of the character described,the combination of a bed plate, a cylinder comprising a water-jacket section and a liner section,

a cylinder head for each end of the cylinder, said liner section being divided transversely of the cylinder into two parts, a frame member overlying each cylinder head, bolts connecting one part of the liner to its cooperating frame member to clamp said liner part against the adjacent cylinder head in gastight relation, bolts for connecting the other frame member to the water-jacket section to clamp the other part of the liner against the other cylinder head in gas-tight relation, supporting and clamping bolts for urging said frame members toward each other to clamp the cylinder sections and cylinder heads in operative assembly and to fasten the cylinder assembly to the bed plate.

In testimony whereof I have aflixed my signature.

G STAV PIELSTICK. 

